矿石组分结构特征表明存在两种不同的矿石建造类型。
The two types are different from each other in ore constitution and texture.
收集一些石头，告诉他们有些是矿石，有些可以作装饰用，像用来建造房子的大理石—样，还有一些可以用来铺路。
Collect some rocks and point out that some rocks are minerals, others may be used for decorations, like marbles used in building houses, and still other rocks are used to build roads.
这条总长超过30公里（18.6英里）的矿区在几个世纪中，提供了建造匈牙利首都的矿石。
The more than 30 km (18.6 miles) long mine system were used during centuries to extract stone to build the Hungarian capital.
收集一些石头，告诉他们有些是矿石\有些叫以作装饰用，像用来建造房子的大理石—样，还有一些可以用来铺路。
Collect some rocks and point out that some rocks are minerals, others may be used for decorations, like marbles used in building houses, and still other rocks are used to build roads.
收集一些石头，告诉他们有些是矿石\有些叫以作装饰用，像用来建造房子的大理石—样，还有一些可以用来铺路。
Collect some rocks and point out that some rocks are minerals, others may be used for decorations, like marbles used in building houses, and still other rocks are used to build roads.
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